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一、概述膨润土是一种以蒙脱石为主要成分的粘土,其次含有如长石、石英、火山玻璃屑、沸石等等。其颜色通常呈淡白绿色、黄绿色、乳白色乃至灰色等。膨润土分为钠质膨润土和钙质膨润土,钠质膨润土的主要成分为钠蒙脱石。日本所产出的膨润土几乎都是钠质膨润土,主要赋存在第三纪地层中,多为层状矿体。系火山凝灰岩、火山熔岩受热液或地下水水解作用而形成。矿层的厚度达10米以上,一般含有10～15％的砂。日本钠质膨润土的产地有:青森、山形、宫城、群马、新泻、岛根、福冈各县。目前已
First, an overview of bentonite is a clay as the main component of clay, followed by containing such as feldspar, quartz, volcanic glass, zeolite and so on. Its color is usually pale green, yellow-green, milky white and so on. Bentonite is divided into sodium bentonite and calcium bentonite, sodium bentonite is the main component of sodium montmorillonite. Bentonite produced in Japan are almost all sodium bentonite, mainly in the Tertiary strata, mostly layered orebodies. Department of volcanic tuff, volcanic lava hydrothermal solution or groundwater formed by hydrolysis. The thickness of the ore layer is more than 10 meters, usually containing 10 to 15% sand. Japan sodium bentonite origin: Aomori, Yamagata, Miyagi, Gunma, Niigata, Shimane, Fukuoka counties. Currently there